Alert archive / Arizona / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 55, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 8, 2012, 5:49 PM MST for Pima County, Pinal County, Arizona. It was in force for 56 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 8, 2012, 5:49 PM MST (00:49 UTC)
- Expired
- Aug 8, 2012, 6:45 PM MST
- In force
- 56 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
Counties Pima County, AZ, Pinal County, AZ
The radar
The Tucson radar (KEMX), 73 km from the middle of the area, began a volume at 00:49 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 8, 6:19 PM MST | TSTM WND DMG | 7 Ssw Oro Valley, AZ | TREE LIMBS DOWN. |
| Aug 8, 6:20 PM MST | TSTM WND DMG | 6 Nw Tucson, AZ | TREE DOWN AT RIVER AND LA CHOLLA...TIME ESTIMATED FROM RADAR. |
| Aug 8, 6:29 PM MST | TSTM WND DMG | 3 Sw Oro Valley, AZ | TREES DOWN IN EXESS OF 6 INCHES |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Tuscon, AZ (KDMA), launched 00:00Z, 0.8 hours before the alert went out and 34 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 465 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 3468 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
688 WUUS55 KTWC 090049 SVRTWC AZC019-021-090145- /O.NEW.KTWC.SV.W.0055.120809T0049Z-120809T0145Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 549 PM MST WED AUG 8 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN PIMA COUNTY IN SOUTH CENTRAL ARIZONA... THIS INCLUDES THE CITIES OF...ORO VALLEY...MARANA... SOUTH CENTRAL PINAL COUNTY IN SOUTH CENTRAL ARIZONA... * UNTIL 645 PM MST * AT 542 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR ORACLE...OR 15 MILES NORTH OF ORO VALLEY...AND MOVING SOUTHWEST AT 15 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BIOSPHERE 2...ORACLE JUNCTION...SADDLEBROOKE...CATALINA...CATALINA STATE PARK AND DOVE MOUNTAIN. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEEK SHELTER INDOORS. EXPECT DAMAGING WINDS IN EXCESS OF 60 MPH... LARGE HAIL...FREQUENT LIGHTNING...AND HEAVY RAIN WITH THIS STORM. && LAT...LON 3223 11103 3254 11132 3274 11091 3260 11072 TIME...MOT...LOC 0049Z 035DEG 13KT 3261 11089 $$ KD
2 follow-up statements
893 WWUS55 KTWC 090119 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 619 PM MST WED AUG 8 2012 AZC019-021-090145- /O.CON.KTWC.SV.W.0055.000000T0000Z-120809T0145Z/ PIMA AZ-PINAL AZ- 619 PM MST WED AUG 8 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MST FOR SOUTH CENTRAL PINAL AND NORTHEASTERN PIMA COUNTIES... AT 615 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR ORACLE JUNCTION...OR 8 MILES NORTH OF ORO VALLEY...MOVING SOUTHWEST AT 15 MPH. THIS STORM WILL MOVE THROUGH DOVE MOUNTAIN...ORO VALLEY AND CATALINA. BLOWING DUST WITH THIS STORM WILL OCCUR WELL AHEAD OF ANY RAIN OR LIGHTNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ENCOUNTER STRONG WINDS...BLOWING DUST AND POOR VISIBILITIES WHILE DRIVING...PULL OFF THE ROAD IF POSSIBLE...PUT THE VEHICLE IN PARK...TAKE YOUR FOOT OFF THE BRAKE AND WAIT UNTIL THE VISIBILITY IMPROVES. PROTECT YOUR HEAD FROM POSSIBLE FLYING DEBRIS. && LAT...LON 3223 11103 3254 11132 3274 11091 3260 11072 TIME...MOT...LOC 0117Z 035DEG 13KT 3253 11096 $$ KD
312 WWUS55 KTWC 090143 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 643 PM MST WED AUG 8 2012 AZC019-021-090151- /O.EXP.KTWC.SV.W.0055.000000T0000Z-120809T0145Z/ PIMA AZ-PINAL AZ- 643 PM MST WED AUG 8 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL PINAL AND NORTHEASTERN PIMA COUNTIES WILL EXPIRE AT 645 PM MST... THE STORM THAT PROMPTED THE WARNING HAD WEAKENED BELOW SEVERE LIMITS ALTHOUGH GUSTY WINDS TO 45 MPH...BLOWING DUST AND POCKETS OF HEAVY RAIN WILL CONTINUE THROUGH ABOUT 730 PM IN THE WARNED AREA AND IN OTHER PARTS OF THE TUCSON METRO AREA. LAT...LON 3223 11103 3254 11132 3274 11091 3260 11072 TIME...MOT...LOC 0141Z 035DEG 13KT 3246 11102 $$ KD
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 5:27 PM MST | Special Weather Statement | TWC | Pinal | 33 min |
| Aug 8, 5:53 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 37 min |
| Aug 8, 6:15 PM MST | Special Weather Statement | TWC | Pima | 45 min |
| Aug 8, 7:06 PM MST | Special Weather Statement | TWC | 24 min | |
| Aug 8, 8:20 PM MST | Areal Flood Advisory | TWC | Pima | 85 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 2012Every severe thunderstorm warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.